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Finding the Fourth Proportional to 80,948.88, 111,709.45 and 47,414.88

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Solution

The fourth proportional to 80,948.88, 111,709.45 and 47,414.88 is: 65,432.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,948.88 : 111,709.45 = 47,414.88 : x
  2. Step 2: Convert to fraction form
    80,948.88/111,709.45 = 47,414.88/x
  3. Step 3: Cross multiply
    80,948.88x = 111,709.45 × 47,414.88
  4. Step 4: Simplify right side
    80,948.88x = 5,296,689,608.07
  5. Step 5: Solve for x
    x = 5,296,689,608.07/80,948.88
  6. Step 6: Final answer
    x = 65,432.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.